313 



1446. Puccinia porri (Sow.) Wt., Sydow 04 ^'"', Lagrust (R 02 a "° 

 6. 04 a ''). 



Plowright (89 ^'") has described the pseudoperidia and aecidiospores, 

 and both Sydow and Rostrup mention st. I although they add that it 

 is rare. On the other hand Tranzschel has proved by cultivating ex- 

 periments that this species does not produce aecidia. No doubt the 

 fact is that the species is to be divided into more biological forms of 

 which some are dimorphic, others trimorphic; I have in vain looked 

 for cluster-cups on Allium scorodoprasum and schoenoprasum, but 

 they have been found for several years in May on Allium fistulosum 

 in the garden of the Vet. &. Agricult. College. 



Allium scorodoprasum &. schoenoprasum very common. Allium montanum. 

 Lyngby (K. H.). Allium fistulosum. F. Odense; S. Landbohejsl^olens Have, 

 Kaerehave ! . Allium ascalonicum. S. Landbohajskolens Have. Allium porrum. 

 S. 0rsl0v (Octob. 74 P. N.). 



1447. Puccinia asparagi de Candolle, Sydow 04 *'^ Aspargesrust 

 (R 02 a '''"> c. icon. 6. 04 a "^X Lit: R 01 k 6. 02 g. 



Heter-eu-puccinia, st. I scantily in June, st. II July— Sept., st. Ill 

 wintering on the stems. 



It attacks the monoecious plants more severely than the female plants 

 (Bull, no 123 New-Yersey experim. station. New Brunswick 1898). 



Asparagus officinalis. J., F. Skaarup (Octob. 72), Svenborg; S. Slagelse 

 abundantly; L. Nakskov and many other places. 



1448. Puccinia iridis (de C.) Wallr., Sydow 04 '»^ Irisrust (R 

 02 a ^" a 04 a ^^). 



Hemipuccinia, st. II &. Ill July— October, in the gardens. 

 Iris pumila. F. Odense; S. Fredensborg, Vilvorde, Frederiksberg. 



1449. Puccinia acetosae (Schum.) Kke., Syd. 04 *'\ Syn: Uredo 

 ac. Schum. no 1559, Syrens Brandstev (H. 37 '^o), Syrerust (R 02 a ^^s) 



Hemipuccinia, st. II abundantly through the whole season, st. Ill 

 scantily, in the autumn. 



Rumex acetosa, acetosella, auriculatus common. 



1450. Puccinia polygoni A. &. S., Syn: Aecidium geranii pusiUi 

 Tranz., Pileurtrust (R 04 a ''^). 



Heter-eu-puccinia; st. I very rare on Geranium, June, st. II &. Ill 

 common on the leaves of Polygonum July— October. 



Geranium pusillum. Lyngby! (Exs. Syd. Ured. no 2175). Polygonum convol- 

 vulus &. dumetorum common. Polygonum iomentosum. S. Ruderhegn (R 84 g ''^). 



1451. Puccinia polygoni amphibii Pers. Syn. ^", Sydow 04 ^*^ 

 Syn: Uredo polygoni Schum. no 1568, Fl. D. tab. 1318, Aecidium 

 sanguinolentum Liro. 



